mount: add umask option

related to https://github.com/chrislusf/seaweedfs/issues/978

weed/command/mount.go

@@ -17,6 +17,7 @@ type MountOptions struct {
 	chunkSizeLimitMB   *int
 	dataCenter         *string
 	allowOthers        *bool
+	umaskString        *string
 }
 
 var (
@@ -37,6 +38,7 @@ func init() {
 	mountOptions.chunkSizeLimitMB = cmdMount.Flag.Int("chunkSizeLimitMB", 4, "local write buffer size, also chunk large files")
 	mountOptions.dataCenter = cmdMount.Flag.String("dataCenter", "", "prefer to write to the data center")
 	mountOptions.allowOthers = cmdMount.Flag.Bool("allowOthers", true, "allows other users to access the file system")
+	mountOptions.umaskString = cmdMount.Flag.String("umask", "022", "octal umask, e.g., 022, 0111")
 	mountCpuProfile = cmdMount.Flag.String("cpuprofile", "", "cpu profile output file")
 	mountMemProfile = cmdMount.Flag.String("memprofile", "", "memory profile output file")
 }

weed/command/mount_std.go

@@ -27,6 +27,12 @@ func runMount(cmd *Command, args []string) bool {
 
 	util.SetupProfiling(*mountCpuProfile, *mountMemProfile)
 
+	umask, umaskErr := strconv.ParseUint(*mountOptions.umaskString, 8, 64)
+	if umaskErr != nil {
+		fmt.Printf("can not parse umask %s", *mountOptions.umaskString)
+		return false
+	}
+
 	return RunMount(
 		*mountOptions.filer,
 		*mountOptions.filerMountRootPath,
@@ -38,11 +44,12 @@ func runMount(cmd *Command, args []string) bool {
 		*mountOptions.allowOthers,
 		*mountOptions.ttlSec,
 		*mountOptions.dirListingLimit,
+		os.FileMode(umask),
 	)
 }
 
 func RunMount(filer, filerMountRootPath, dir, collection, replication, dataCenter string, chunkSizeLimitMB int,
-	allowOthers bool, ttlSec int, dirListingLimit int) bool {
+	allowOthers bool, ttlSec int, dirListingLimit int, umask os.FileMode) bool {
 
 	util.LoadConfiguration("security", false)
 
@@ -146,6 +153,7 @@ func RunMount(filer, filerMountRootPath, dir, collection, replication, dataCente
 		MountMode:          mountMode,
 		MountCtime:         fileInfo.ModTime(),
 		MountMtime:         time.Now(),
+		Umask:              umask,
 	}))
 	if err != nil {
 		fuse.Unmount(dir)